20165355

素因数分解:

$3^5\times 5^1\times 7^1\times {\mathrm{2371}}^1$

素因数の和:2398

約数の個数: 48

約数和(自身を含む): 41443584

約数和(自身を除く): 21278229

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 243, 315, 405, 567, 945, 1215, 1701, 2371, 2835, 7113, 8505, 11855, 16597, 21339, 35565, 49791, 64017, 82985, 106695, 149373, 192051, 248955, 320085, 448119, 576153, 746865, 960255, 1344357, 2240595, 2880765, 4033071, 6721785, 20165355]

約数ペア:

[(1, 20165355), (3, 6721785), (5, 4033071), (7, 2880765), (9, 2240595), (15, 1344357), (21, 960255), (27, 746865), (35, 576153), (45, 448119), (63, 320085), (81, 248955), (105, 192051), (135, 149373), (189, 106695), (243, 82985), (315, 64017), (405, 49791), (567, 35565), (945, 21339), (1215, 16597), (1701, 11855), (2371, 8505), (2835, 7113)]